375 Rem Ultra Mag Remington Core Lockt 270 Grain SPRemington Core Lokt . 375 Remington Ultra Magnum 270gr Soft Point. The Core Lokts tapered copper jacket locked to the lead core delivers 2x expansion and consistent weight retention for deep penetration on elk, moose, and dangerous game. Reloadable brass, non corrosive. 20 rounds per box. Caliber: . 375 Rem Ultra Mag Bullet: 270gr Core Lokt SP 20 rounds 2x expansion, consistent weight retention, deep penetration Elk, moose, dangerous game In store